Hi,
You don't give the time zone but this is probably due to the clock jumping by
one hour when switching to summer time. In UK this happens at 1am and on that
day there is no such thing as 01:05, etc., see eg
https://www.timeanddate.com/time/change/uk/london
In your time zone this probably happens at 2am.
Georgi Boshnakov
------------------------------
Message: 7
Date: Thu, 26 Jan 2017 11:02:06 +0100
From: rob vech <rob.vec...@gmail.com>
To: r-devel@r-project.org
Subject: [Rd] strptime bug
Message-ID: <70325e6b-6d54-8172-3915-bbfc8d5cd...@gmail.com>
Content-Type: text/plain; charset="UTF-8"
Dear developer list,
I want to submit the following problem that seems like a bug, as confirmed by
an other user [1], related to date-time parsing:
Here a simple script:
# that works:
as.numeric(as.POSIXlt(strptime('2016-03-27 01:05:50', format='%Y-%m-%d
%H:%M:%S')))
# that not (it returns NA):
as.numeric(as.POSIXlt(strptime('2016-03-27 02:05:50', format='%Y-%m-%d
%H:%M:%S')))
# it works again
as.numeric(as.POSIXlt(strptime('2016-03-27 03:05:50', format='%Y-%m-%d
%H:%M:%S')))
I made several test and the problem seems to be related to the couple
"2016-03-27" as date and "2" as hour. It seems not to be related to the
datetime format.
There is a similar bug on bugzilla [2] but in my case I cannot replicate it.
My OS is Win 7 and R v3.3.2.
Thank you
rob
[1] https://stat.ethz.ch/pipermail/r-help/2017-January/444468.html
[2] https://bugs.r-project.org/bugzilla/show_bug.cgi?id=16764
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